Locking device for clamps.



J. BEGINS. LOCKING DEVICE FOR CLAMPS.

APPLICATION FILED APR 20,1907.

Patented Dec. 7, 1909.

but showing JOSEPH BEGINS, OF BRUNSWICK, MAINE, ASSIGNOR "1'0BARBER-COLMAN COMPANY,

OF ROCKFORD, ILLINOIS,IA CORPORATION" OF ILLINOIS.

I specification of Letters meat. Application filed April 20, 1907.Serial no. 369,389.

' jocxme nnvion non. CLAMPS.-

Patented Dec. 7, 1909.

. To an whom it may concern:

Be it known that I, JOSEPH BEGINS, a citizen of the United States,residing at Brunswick, in the county of Cumberland and State of Maine,have invented certain new and useful Improvements in Lockin Devices forClamps, of which the following is a specification. p v

The object of this invention is to provide a simple, convenient, andeflicient device for locking-a clamp in the closed or operativeposition. u r

I shall herein describe my invention as appliedto a tongue clamp of theform commonly employed intextile mills for holding warp threads. I Inthe accompanying drawings Figure 1 is a fragmental perspective view of atongue clamp provided with a locking device embodying the features of myinvention. Fig. 2 is a side elevation of said parts showing the lockingdevice in the operative osition. Fig. 3 isa view similar to that 0 Fig.2,

the locking device in inoperative position. 1 The tongue clamp Acomprises a bar A having a groove A therein, and a tongue piece Aadapted to fit into the groove A". For locking the ten e piece in lace'in said groove I provi e at each on of the clamp a locking devicecomprising a bail 1 which may be made of wire and which is preferablyshaped to conform to the parts with which it is to engage. In the resentembodiment said bail com rises a be y portion 2 adapted to fit over t egrooved bar A and a narrow loo 3 adapted to fit over the tongue iecePreferably integral with each 0 the arms of the'bail 1 is an elongatedloop 4 through which extends a screw bolt 5, said bolt assinlg throughan opening 6 in the oove bar The head 7 -.7 of said-bolt or awasher -8beneath said head bears against one of the loo 5 4 atone sideof thegrooved bar A, an a thumb nut 9- turned upon said bolt provides means Ifor clamping said loops 4 and consequently the bail 1 firmly to t H ebar A .A washer 10 may be placed between the nut 9 and the adjacent loop4.

When the bail 1 is placed in the position indicated in, Fig. 2 and thewing nut tightenedup, the tongue piece A is locked against .withdrawalfrom the groove A When it is desired to open the clamp, the

wing nut 9 is rotated to free the bail 1. The latter is then slipped offthe end of the grooved bar A and tongue piece A by the operator, theparts assuming substantially the position indicated in Fig. 3. Thetongue piece A may now be withdrawn from the groove A The loops 4 beingclosed, the locking bail 1 'is always attached to the clamp in readinessto be slipped over the parts of said clamp when it is desired again tolock the clamp in operative position.

It is evident that various changes may be made in the embodiment hereinshown without departing from the spirit and scope of my invention,therefore no undue limitation should be understood from the foregoing Idetailed description.

I claim as my invention: i 1. A clamp having a bail pivotall and slidably attached thereto, and means or se curing said bail against movementwith relation to the clamp.

2. A clamp provided with a locking device consisting of a portionadapted to fit over the sections of the clamp, said portion having an'elongated loop thereon, and means extending through said loop forclamping said portion to the clamp.

3. A clam provided with a lockin means consisting o a member adapted tot over the sections of the clamp, sald member having two elongated loopsthereon,'and a bolt extending through one of the clam -sections andthrough said elongated loops or securing said member to the clamp.

4. A clam provided with a locking means consisting o a bail formed frommm and adapted t'o-fit over and conforming to the clam sections, saidbail having an elonat loop .at-each side thereof adapted to ie atopposite sides of one of the clampsections, a bolt extending throu hsaid clamp section and through said e ongated Witnesses RUSSELL W.EATON, CHARLES A. CooGEsHALL.

